这里还有一题，希望大家可以为我解答，感谢
In colonial Pennsylvania, Benjamin Franklin complained that an influx
of German speaking immigrants would threaten the ability of the English
in the settlement to maintain their language and government. He was so
worried about this prospect________he established one of the first groups
of English langu age schools for Germans with the hope of helping them to better assimilate into
the English-speaking culture.
A) that B) and C) but D) because 答案是B
: 请问不能用so ...... that的原因是什么?这样翻成中文还满顺得呀+ +a

答案可能误植，应该是 A。 其他语意不顺。